The car's windscreen was damaged and the vehicle was later found to have been scrapped.

The woman, who was 25 at the time, suffered a fractured collar bone and skull. She has had two operations and is still recovering following the crash on April 14 2014 in Siviter Way in Dagenham, east London.

Detective Constable Liz Carrey, from Barking and Dagenham CID, said: "Police have conducted extensive inquiries to trace who was responsible for this collision.

"This has been a life-changing experience for the victim, both physically and mentally. The victim was seriously injured and she would like some closure to help her come to terms with the incident.

"We know the car has been scrapped, but someone may have seen it damaged or the driver of the car may even have spoken about what happened. I would ask anyone who has information to search their conscience and contact police."

A man and woman, both 39, were summonsed to appear at Barkingside Magistrates' Court on November 18 2014 but the date was set aside and they were told to await further instruction.